The problem with paying £50 to try a bike is that you could have three bikes in mind, you might need to reorder a different size and it all adds up. throwing £50 to a bike shop which advertise a bike for sale for them to do their job is ridiculous and beyond a joke, if they advertise a bike for sale or a range linked to their store then they have to without cost to the consumer order said bike pre-sale.
I do not think they offered the bike for sale in this instance, he inquired about them getting one in for him.
As a business I have been stuck with as stock before, so I understand the shops problems.